Ron Johnson
Member
- Location
- Columbia, TN
I am currently taking a class in Industrial Electricity. I have a copy of the draft of the 2011 NEC code and have found a couple items that do not seem to make sense. I am hoping that you can explain these items to me so I can let the teacher know; he says to wait till the final edition comes out and I don?t want to wait.
The first item is:
404.2(C) Switches Controlling Lighting Loads. Where switches control lighting loads supplied by a grounded general purpose branch circuit, a grounded circuit conductor shall be provided at the switch location. [ROP 9-95]
Exception: The grounded circuit conductor shall be permitted to be omitted from the switch enclosure where either of the conditions in (1) or (2) apply: [ROP 9-95]
(1) Conductors for switches controlling lighting loads enter the device box through a raceway. [ROP 9-95]
(2) Cable assemblies for switches controlling lighting enter the box through a framing cavity that is open at the top or bottom on the same floor level, or through a wall, floor, or ceiling that is unfinished on one side. [ROP 9-95]
This sounds like you now need to run a neutral wire into the box where the switch is though it doesn?t mention whether it needs to be included in the circuit itself ? perhaps to be able to run a tap for an outlet? The teacher thinks that perhaps they mean ?a grounding circuit conductor? ? which means that perhaps the want to use a grounding wire on the switch, though it doesn?t say to connect it, just that it should be available.
The second is:
210.52(A)(4) Receptacles installed for countertop surfaces as specified in 210.52(C) shall not be considered as the receptacles required by 210.52(A)). [ROP 2-228][/INDENT]
This sounds that the receptacles used for the counter space is not included in the outlets for the wall, being every 12 feet. So I would expect that means that after the countertop outlets go in, you then need to run outlets to be spaced every 12 feet. Obviously, this is not what they want to say, but it does sound like they are saying it.
Am I wrong on these interpretations? Are these mere oversights or typos that got through the first draft?
The first item is:
404.2(C) Switches Controlling Lighting Loads. Where switches control lighting loads supplied by a grounded general purpose branch circuit, a grounded circuit conductor shall be provided at the switch location. [ROP 9-95]
Exception: The grounded circuit conductor shall be permitted to be omitted from the switch enclosure where either of the conditions in (1) or (2) apply: [ROP 9-95]
(1) Conductors for switches controlling lighting loads enter the device box through a raceway. [ROP 9-95]
(2) Cable assemblies for switches controlling lighting enter the box through a framing cavity that is open at the top or bottom on the same floor level, or through a wall, floor, or ceiling that is unfinished on one side. [ROP 9-95]
This sounds like you now need to run a neutral wire into the box where the switch is though it doesn?t mention whether it needs to be included in the circuit itself ? perhaps to be able to run a tap for an outlet? The teacher thinks that perhaps they mean ?a grounding circuit conductor? ? which means that perhaps the want to use a grounding wire on the switch, though it doesn?t say to connect it, just that it should be available.
The second is:
210.52(A)(4) Receptacles installed for countertop surfaces as specified in 210.52(C) shall not be considered as the receptacles required by 210.52(A)). [ROP 2-228][/INDENT]
This sounds that the receptacles used for the counter space is not included in the outlets for the wall, being every 12 feet. So I would expect that means that after the countertop outlets go in, you then need to run outlets to be spaced every 12 feet. Obviously, this is not what they want to say, but it does sound like they are saying it.
Am I wrong on these interpretations? Are these mere oversights or typos that got through the first draft?